Dell Inc. Venue 8 Pro 5855 - kernel errors, hardware not supported

[Marcin]

 Dell Inc. Venue 8 Pro 5855 is unit who is not full supported by Ubuntu 16.04 (Xenial Xerus)

Kernel issues what found:

[drm:intel_dsi_init [i915]] *ERROR* Failed to own gpio for panel control
[drm:pwm_setup_backlight [i915]] *ERROR* Failed to own the pwm chip
attached crtc is active, but connector isn't
DPIO read pipe B reg 0x8080 == 0xffffffff
Workqueue: events output_poll_execute [drm_kms_helper]
[ENCODER:41] active 0 with crtc active 1
pipe state doesn't match!

Hardware not supported:

WebCam
Sound
Bluetooth

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-21-generic 4.4.0-21.37
ProcVersionSignature: hostname 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CasperVersion: 1.376
Date: Thu Apr 28 08:41:15 2016
LiveMediaBuild: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
MachineType: Dell Inc. Venue 8 Pro 5855
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=(loop)/casper/vmlinuz.efi append noprompt boot=casper amd_iommu=on intel_iommu=on noeject nohibernate keyboard-configuration-layoutcode=pl console-setup/layoutcode=pl userfullname=Marcin username=marcin hostname=hostname nfsroot=usb showmounts persistent-path=/NFS/16.04/desktop-amd64 persistent iso-scan/filename=/NFS/16.04/ubuntu-16.04-desktop-amd64.iso
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-21-generic N/A
 linux-backports-modules-4.4.0-21-generic N/A
 linux-firmware 1.157
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/07/2015
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.2.0
dmi.board.name: 0HJFHN
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.2.0:bd12/07/2015:svnDellInc.:pnVenue8Pro5855:pvr:rvnDellInc.:rn0HJFHN:rvrA00:cvnDellInc.:ct8:cvr:
dmi.product.name: Venue 8 Pro 5855
dmi.sys.vendor: Dell Inc.

[Marcin (marcincelebucki)]

Attached kernel log

[Brad Figg (brad-figg)]

This change was made by a bot.

[Marcin (marcincelebucki)]

Attached device tree from Windows OS

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.6 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc6-wily/

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]